| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7078957 | Bioresource Technology | 2014 | 9 Pages |
Abstract
When changes in HRT and COD/N increased nitrogen loading, the ratio of the relative abundance of aerobic to anaerobic ammonium-oxidizers decreased. The COD/N ratio determined the species composition of the denitrifiers; however, Thiobacillus denitrificans, Pseudomonas denitrificans and Azoarcus sp. showed a high tolerance to the environmental conditions and occurred in the granules from all reactors. Denitrifier genera that support granule formation were identified, such as Pseudomonas, Shinella, and Flavobacterium. In aerated granules, nirK-possessing bacteria were more diverse than nirS-possessing bacteria. At a low COD/N ratio, N2O-reducer diversity increased because of the presence of bacteria known as aerobic denitrifiers.
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Process Chemistry and Technology
Authors
Agnieszka Cydzik-Kwiatkowska, Paulina Rusanowska, Magdalena ZieliÅska, Katarzyna Bernat, Irena Wojnowska-BaryÅa,